Sanyo LCD-42K30-HD Service Manual

Contents

14Service AdjustmentsRed "+" Green "+" Blue "+"Red "-" Green "-" Blue "-"CAUTION !Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performanceand for correct operation.■ Setting the Initial dataThis adjustment is controlled by the CPU (IC7200) through the IIC Bus Data Line in the chassis, and thoseadjustment data are memorized the memory IC (IC8000). Therefore, Main board or the memory IC (IC8000)is replaced, these data will be disappeared. Readjust should be made. Initial data is provided in the CPUROM, when the memory IC (IC8000) is replaced with new one. CPU ROM data is loaded into the memory.Initial data is provided to operating the monitor basically. For operating the monitor quality performance,further adjustment is required following chassis electrical adjustment.1. Receive good quality signal.2. Enter the Service Mode.3. Confirm data value to be the same as the Service Adjustment Data Table. If it is different, change tocorrect data4. Exit the Service Mode.■ White balance AdjustmentPatternWhite Pattern 100% (in AV mode).ConditionPicture Mode: STANDARDColor Temperature: NORMALAging Time: More than 10 minutesAdjustment1. Enter the Service Mode.2. Select "Source ALL" by pressing ▲▼ button, and select "Properties White" by pressing ◄► button.3. Set R,G,B value to “FF” by pressing NUMERIC buttons.To adjust Red : Press 1 (data value up) and 4 (data value down).To adjust Green : Press 2 (data value up) and 5 (data value down).To adjust Blue : Press 3 (data value up) and 6 (data value down).4. Decide one item in three items to a fixed value (For example, let R be fixed value), select item of other 2colors(Example, G or B), and adjust to produce a normal black and white picture in highlight areas.(Note: At this time, Adjust the other 2 colors data less than fixed data.)5. Exit the Service Mode.After adjustment, confirm white balance again by normal picture.Service ModeSource AllProperties: WhiteDate: Red 85 Green 85 Blue 85V1.280312UH4B42HD